Visualization of horizontally-aligned single-walled carbon nanotube growth with13C/12C isotopes

Hiroki Ago, Naoki Ishigami, Naoki Yoshihara, Kenta Imamoto, Seiji Akita, Ken Ichi Ikeda, Masaharu Tsuji, Tatsuya Ikuta, Koji Takahashi

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Horizontally aligned growth of single-walled carbon nanotubes (SWNTs) on single-crystal surfaces has attracted great interest in terms of nanoelectronic applications, but their growth mechanism is not fully understood. We report on the 13C/12C isotope-labeled growth of SWNTs on a sapphire surface to visualize their growth process. Switching carbon feedstock from 13CH4 to 12CH4 during SWNT growth induces a gradient distribution of the carbon isotopes along the tube axis. From the Raman mapping analysis, we succeeded to observe the gradual change in the isotope distribution of individual SWNTs. The results indicate the base-growth mode for the horizontally aligned SWNTs, which suggests that nanotube-sapphire interaction is essential to alignment. This method offers a unique technique to analyze the nanotube growth mechanism and kinetics.

Original languageEnglish
Pages (from-to)1735-1738
Number of pages4
JournalJournal of Physical Chemistry C
Volume112
Issue number6
DOIs
Publication statusPublished - Feb 14 2008

Fingerprint

Single-walled carbon nanotubes (SWCN)
Isotopes
Visualization
isotopes
carbon nanotubes
Aluminum Oxide
Sapphire
Nanotubes
nanotubes
sapphire
Carbon Isotopes
Single crystal surfaces
carbon isotopes
Carbon
Nanoelectronics
crystal surfaces
Feedstocks
alignment
tubes
gradients

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

Visualization of horizontally-aligned single-walled carbon nanotube growth with13C/12C isotopes. / Ago, Hiroki; Ishigami, Naoki; Yoshihara, Naoki; Imamoto, Kenta; Akita, Seiji; Ikeda, Ken Ichi; Tsuji, Masaharu; Ikuta, Tatsuya; Takahashi, Koji.

In: Journal of Physical Chemistry C, Vol. 112, No. 6, 14.02.2008, p. 1735-1738.

Research output: Contribution to journalArticle

Ago, H, Ishigami, N, Yoshihara, N, Imamoto, K, Akita, S, Ikeda, KI, Tsuji, M, Ikuta, T & Takahashi, K 2008, 'Visualization of horizontally-aligned single-walled carbon nanotube growth with13C/12C isotopes', Journal of Physical Chemistry C, vol. 112, no. 6, pp. 1735-1738. https://doi.org/10.1021/jp709737q
Ago, Hiroki ; Ishigami, Naoki ; Yoshihara, Naoki ; Imamoto, Kenta ; Akita, Seiji ; Ikeda, Ken Ichi ; Tsuji, Masaharu ; Ikuta, Tatsuya ; Takahashi, Koji. / Visualization of horizontally-aligned single-walled carbon nanotube growth with13C/12C isotopes. In: Journal of Physical Chemistry C. 2008 ; Vol. 112, No. 6. pp. 1735-1738.
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